Molding apparatus.



No. 670,64l. Patented Mar. 26, I901.

J c. REED.

MOLDING APPARATUS.

(Application. filed- Mar. 22, ISOOJ (No Model.)

3 Sheets-8heet I.

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no. 67 4 Phtented ma 26, I901.

J. C. REED.

MOLDING APPARATUS.

7 (Application filed Mar. 22,1900. {No Model.) 3 Sheets-Sh8at 2.

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J. C. REED.

MOLDING APPARATUS.

Apylication filed Mar. 23, 1900.- (N0 Model.) 3 Shuts-Sheet 3.

No. 670,641. Patented Mar. 26, I901.

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JOHN C. REED, OF ALLEGHENY, PENNSYLVANIA.

' MOLDINGIAPPARATUS.

SPECIFICATION formingpart of Letters Patent No. 670,641, dated March 26, 1901.

Application filed March 22, 1900. fierial No 9,794. (No model- To all whom it may concern.-

Be it known that I, JOHN G. REED, a citizen of the United States, residing at Allegheny, in the county of Allegheny and Stateof Pennsylvania, have invented certain new and useful Improvementsin Molding Apparatus; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention has relation to molding apparatus, and has for its object the provision of means for effecting the separation of the molded sand from the pattern without danger of marring the mold by the separation of any of the sand from the mass of the same when the molded sand and the pattern are separated. My invention consists in the novel construction,combination, and arrangement of parts hereinafter described and claimed.

My invention is particularly adapted for use in connection with apparatus for casting large and comparatively light hollow articles, such as bath-tubs, and in which the cheek and cope or concave part of the mold is formed by packing and ramming sand into a flask and over a pattern or form which is sustained on a stationary base and in which the drag or nowel part is formed by packing and ramming sand into a hollow pattern fixed in a suitable casing.

In the accompanying drawings, Figure 1 is a vertical longitudinal sectional view of the apparatus for forming the cheek and cope or concave part of a mold for bath-tubs on the line X X of Fig. 2. Fig. 2 is a plan view of the same with the pattern or form removed. Fig. '3 is an enlarged sectional detail of part of the apparatus, and Fig. 4 isa vertical transverse sectional view of the apparatus,for forming the nowel or drag part of the mold. Fig. 5 is a plan view,enlarged, of a part of the mechanism shown in Fig. 4:.

A designates the main base of the apparatus shown in Figs. 1 and 2, which consists of a casting substantially rectangular in shape and formed with a depression B, corresponding to the exterior contour of the article to be cast. A frame 0 fits within said depression, resting upon a ledge a. The sides of the depression B are cut away, as shown at ends of the base.

in the mold, which in this instance is a bathtub having a rounded rim. The pattern I) is securely attached to the frame 0, and the latter is set at such depth in the base A that the curve of the rim of the pattern extends up to or slightly above the upper surface of the base A, so that the upper surface (1 of the base corresponds to the position of the..parting of the mold. The base A has holes a a at the corners of its horizontal flange for the insertion of pins or bolts to secure it to the flask N, having corresponding holes in its flanged portion. The frame Ohaslongitudinal and lateral cross-bars E E, which may be either cast integral with or secured to the frame, and at each side and at each end of the frame are projecting bars H H, that are either cast integral with the frame or are securely attached to the same. the bars H H are shown asseparate pieces attached to the frame 0 by bolts h h. 'The bars H H pass through holes 2' t' in the sides and ends of the base 'A and register with ledges or projections K K on the sides and Holes k k are formed in the ledges K K, and holes h h are formed in the-bars H H, the holes in the bars and the holes in the ledges being exactly opposite to each other. The holes in the bars H H are countersunk from each side, so as to leave a contracted zone in each, and they are intend-- ed to receive a bar M, that fits loosely in the central zone in the holes 72 h. The holes in the ledges K K are tapering or contracted toward their lower ends and are formed each with an internal flange h, which forms a stop for the lower end of the bar or lever M. The

ment to the frame G and through it to the pattern, and when the bar is drawn in any direction it will. by reason of its great leverage exert a powerful effect on the frame 0.

N designates the flask, which is attached to the base A in the usual manner, and O designates the sand, which is packed into the flask and rammed around and over the pattern D.

In the drawings 'bar M is intended to impart a vibratory move- IOO.

Operation: The base A being placed in the desired position on the working floor, the flask N is lowered over the pattern and filled with sand, which is packed and rammed in the usual manner. When the flask has been filled and rammed, the bar M is inserted in the registering holes in one of the bars H and one of the ledges K, and the upper end of the bar is either moved to and fro positively and a slight. vibratory motion thereby communicated to the frame and to the pattern D or said bar M may be drawn or forced against one side of the hole in the bar II until a tension is produced. YVhen the bar M is then released from such strain or tension, the recoil will set up a vibration, which will expend itself in vibrating the frame 0 and pattern D, with an effect similar to that produced by rapidly-repeated blows of a hammer upon a projecting portion of the frame C.

lVhile I have described my invention as applied to the cheek and cope or concave part of the mold, it may be applied to the nowel or drag part, as illustrated in Fig. 4C. In such case the bars H H project from the flange of the casing P, which contains the concave pattern g and register with projections from the base of the nowel or drag S. In other respects the construction and operation of the devices are substantially the same as already described with reference to the cheek and cope part of the mold.

Having described my invention, I claim 1. In a molding apparatus, the combination with a pattern of a horizontally-movable frame to which said pattern is securely and firmly attached and a base upon which said frame is supported, the said frame and base being formed or provided with registering projections having vertically-coinciding holes for the insertion of a, bar or lever to vibrate or reciprocate said frame and produce a vibration of the pattern to free the latter from the sand of the mold.

2. In a molding apparatus, the combination with a base having slots 01' openings in its walls and ledges projecting outwardly below said openings, of projections in its base outside said openings and formed with vertical holes, a horizontally-movable frame supported on said base and provided with arms or projections which extend through said slots or openings, register with the projections on the base and are formed with correspon ding or coinciding holes, and a pattern securely and firmly attached to said frame, the parts being so constructed and arranged as to permit of the insertion of a lever or bar in said coinciding holes to vibrate the frame and communicate such vibration to the pattern to free the latter from the sand in the mold.

3. In a molding apparatus, comprising a flask, a base upon which the flask rests and a pattern, the combination with a base having openings in its walls and ledges or projections outside said walls with vertical holes countersunk on both sides, of a horizontallylnovable frame supported in said base and having arms or projections which extend through the openings in the base and register with the projections thereof, and which are formed with countersunk holes which 00- incide with the holes in the projections of the base and a pattern which is securely and firmly attached to said frame, the parts being so constructed and combined that the frame and pattern may be vibrated by the movement and leverage of a bar or lever inserted in the coinciding holes, to free the pattern from the sand in the mold.

4;. In a molding apparatus, the combination with a pattern of a vibratable part to which said pattern is securely and firmly attached and a base upon which said vibratable part is supported, the said vibratable part and base being formed or provided with registering projections having vertically-coinciding holes for the reception of a bar or lever to vibrate or reciprocate said vibratable part and produce a vibration of the pattern to free the latter from the sand of the mold.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN C. REED.

Witnesses:

W. J. McOALL, W. V. IVICOANDLESS. 

